Kenwood NX-800 Service Manual page 78

Uhf digital transceiver
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NX-800
Item
Panel test mode
5. Sensitivity
1) CH-Sig : 1-1
check
SSG output
Wide:
–117dBm (0.32µV)
(MOD: 1kHz/±3kHz)
Narrow:
–117dBm (0.32µV)
(MOD: 1kHz,
Dev: ±1.5kHz)
Common Section
Item
Panel tuning mode
1. Setting
1) DC voltage: 13.6V
2) SSG standard modulation
[Wide] MOD: 1kHz, DEV: 3kHz
[Narrow] MOD: 1kHz, DEV: 1.5kHz
2. LCD
1) Adj item: [CNTR]
contrast
Adjust: [✳✳✳]
Press [ ] key to store
the adjustment value.
3. Receive
1) Adj item: [RAST]
Assist
Adjust: [✳✳✳]
2) Adj item: [L RAST]→
[L' RAST]→[C RAST]→
[H' RAST]→[H RAST]
Adjust: [✳✳✳]
Press [ ] key to store
the adjustment value.
Transmit
1) Adj item: [TAST]
Assist
Adjust: [✳✳✳]
2) Adj item: [L TAST]→
[L' TAST]→[C TAST]→
[H' TAST]→[H TAST]
Adjust: [✳✳✳]
PTT : ON
Press [ ] key to store
the adjustment value.
78
ADJUSTMENT
Condition
PC test mode
equipment
1) Test Channel
SSG
Channel: 1
AF VTVM
Test Signaling
Oscilloscope
Mode: Analog
Distortion
Signaling: 1
meter
SSG output
Wide:
–117dBm (0.32µV)
(MOD: 1kHz/±3kHz)
Narrow:
–117dBm (0.32µV)
(MOD: 1kHz,
Dev : ±1.5kHz)
Condition
PC test mode
equipment
1) Adj item: [LCD Con-
trast]
Press [Apply] but-
ton to store the
adjustment value.
1) Adj item: [Receive
Assist]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
Press [Apply All]
button to store the
adjustment value.
1) Adj item: [Transmit
Assist]
2) Adj item: [Low],
[Low'], [Center],
[High'], [High]
PTT: Press
[Transmit] button.
Press [Apply All]
button to store the
adjustment value.
Measurement
Test-
Unit Terminal Unit
ANT
EXT SP
connec-
tor
Measurement
Test-
Unit Terminal Unit
Adjustment
Specifi cations /
Parts
Method
Check
12dB SINAD or
more
Adjustment
Specifi cations /
Parts
Method
[Panel
Adjust the LCD
After replacing the
tuning
contrast by looking.
LCD align contrast.
mode]
[ ],[ ]
[PC test
mode]
The sub LCD display
3.0V±0.1V
[ ],[ ]
and [V] indicator
on the PC window
[PC test mode]
shows VCO lock
Press [Apply All]
voltage. Change the
button to store the
adjustment value
adjustment value
to get VCO lock
after all adjustment
voltage within the
point was adjusted.
limit of the speci-
fi ed voltage.
Note:
Confi rm the VCO
lock voltage approxi-
mately 3 seconds
after the adjustment
value is changed.
Remarks
Remarks

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